Foramen ovale

Options

A. Connects the two atria in the foetal heart
B. Connects pulmonary trunk and aorta in foetus
C. Is condition in which heart valves do not completely close
D. Is a shallow depression in the inter-ventricular septum

Answer

A

Explanation

In the foetal heart, foramen ovale is an opening in the inter-atrial septum which is closed in adult and represented by an oval depression called foss ovalis.
In the embryonic period, a blood vessel called suctus arteriosus shunts blood from the pulmonary aorta into systemic aorta.
But after birth, ductus arteriosus closes, leaving a remnant called ligamentum arteriosum. The artium and the ventricle of the same side are also separated by a thick fibrous tissue called the atrio-ventricular ceptum.